19935920

素因数分解:

$2^4\times 5^1\times {\mathrm{249199}}^1$

素因数の和:249212

約数の個数: 20

約数和(自身を含む): 46351200

約数和(自身を除く): 26415280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 249199, 498398, 996796, 1245995, 1993592, 2491990, 3987184, 4983980, 9967960, 19935920]

約数ペア:

[(1, 19935920), (2, 9967960), (4, 4983980), (5, 3987184), (8, 2491990), (10, 1993592), (16, 1245995), (20, 996796), (40, 498398), (80, 249199)]